diff options
| -rw-r--r-- | lib/gfxpoly/test.c | 44 |
1 files changed, 29 insertions, 15 deletions
diff --git a/lib/gfxpoly/test.c b/lib/gfxpoly/test.c index 7aeb3470..3b08f225 100644 --- a/lib/gfxpoly/test.c +++ b/lib/gfxpoly/test.c @@ -306,24 +306,38 @@ int test_square(int width, int height, int num, double gridsize, char bitmaptest int test_area() { int t; - for(t=0;t<50;t++) { - - gfxline_t*line1 = gfxline_makerectangle(50, 50, 150, 150); - gfxline_t*line2 = gfxline_makerectangle(100, 100, 200, 200); - - double ua = (M_PI*2*t) / 50.0; - - gfxmatrix_t matrix; - memset(&matrix, 0, sizeof(gfxmatrix_t)); - matrix.m00= cos(ua); matrix.m10=sin(ua); - matrix.m01=-sin(ua); matrix.m11=cos(ua); - gfxline_transform(line1, &matrix); - gfxline_transform(line2, &matrix); + for(t=0;t<50;t++) + { + int x1 = lrand48()%200; + int y1 = lrand48()%200; + int x2 = x1 + 10+(lrand48()%200); + int y2 = y1 + 10+(lrand48()%200); + gfxline_t*line1 = + gfxline_append( + gfxline_makerectangle(50, 50, 150, 150), + gfxline_makerectangle(75, 75, 125, 125) + ); + gfxline_t*line2 = gfxline_makerectangle(x1, y1, x2, y2); + + gfxmatrix_t m; + m.m00 = cos(t*M_PI/180.0); + m.m01 = sin(t*M_PI/180.0); + m.m10 = -sin(t*M_PI/180.0); + m.m11 = cos(t*M_PI/180.0); + m.tx = 0; + m.ty = 0; + gfxline_clone(line1); + gfxline_clone(line2); + gfxline_transform(line1, &m); + gfxline_transform(line2, &m); gfxpoly_t*poly1 = gfxpoly_from_fill(line1, 0.05); gfxpoly_t*poly2 = gfxpoly_from_fill(line2, 0.05); - double area = gfxpoly_intersection_area(poly1, poly2); - //printf("%f\n", area); + + gfxpoly_t*i = gfxpoly_intersect(poly1, poly2); + double area1 = gfxpoly_intersection_area(poly1, poly2); + double area2 = gfxpoly_area(i); + printf("%f %f\n", area1, area2); gfxpoly_destroy(poly1); gfxpoly_destroy(poly2); |